TY  - RPRT
TI  - Age of Early Cretacous palynomorphs in the Muirkirk clay pit fossil locality (Prince Georges County, MD)
AU  - Eleanora I. Robbins
PY  - 1991
DO  - 10.3133/ofr91613
UR  - https://pubs.usgs.gov/publication/ofr91613
ID  - ofr91613
ER  -